Mowgli's friend in "The Jungle Book" (5)
I believe the answer is:
akela
'mowgli's friend in the jungle book' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for akela that I've seen before include "Leader of group" , "Leader of pack of Cub Scouts - she-wolf in "The Jungle Book"" , "Cubs leader" , "Jungle Book wolf (Kipling)" , "Adult leading cubs" .)